Health messages are simply overwhelmed, in volume and in effectiveness, by junk-food ads that often deploy celebrities or cartoon characters to great effect. We may know that eating fruits and vegetables is good for us, but the preponderance of the signals we get - and especially the signals children get - push us in the direction of junk food.

The optimum amount of sugar in a product became known as the 'bliss point.' Food inventors and scientists spend a huge amount of time formulating the perfect amount of sugar that will send us over the moon and send products flying off the shelves.

The optimum amount of sugar in a product became known as the 'bliss point.' Food inventors and scientists spend a huge amount of time formulating the perfect amount of sugar that will send us over the moon and send products flying off the shelves.

It's not just a matter of poor willpower on the part of the consumer and a give-the-people-what-they-want attitude on the part of the food manufacturers. What I found, over four years of research and reporting, was a conscious effort... to get people hooked on foods that are convenient and inexpensive.